Christopher Barker wrote:
>> If you are not running from svn, a workaround may be to specify the
>> angles as an ndarray or masked array with the shape set to (N,1) where N
>> is the number of arrows.
>
> Yes, that seems to work. Thanks!
However, I'm a bit confused now -- if I specify the angles explicitly,
how do I specify the lengths of the arrows? The docs aren't clear on
this point:
*angles*: ['uv' | 'xy' | array]
With the default 'uv', the arrow aspect ratio is 1, so that
if *U*==*V* the angle of the arrow on the plot is 45 degrees
CCW from the *x*-axis.
With 'xy', the arrow points from (x,y) to (x+u, y+v).
Alternatively, arbitrary angles may be specified as an array
of values in degrees, CCW from the *x*-axis.
does it use sqrt(x^2+y^2) as the length?
Also:
*units*: ['width' | 'height' | 'dots' | 'inches' | 'x' | 'y' ]
arrow units; the arrow dimensions *except for length* are in
multiples of this unit.
* 'x' or 'y': *X* or *Y* data units
The arrows scale differently depending on the units. For
'x' or 'y', the arrows get larger as one zooms in;
which makes it sound like when you set "units" to 'x' or 'y' that the
length does get set to those units...
What I'd like to be able to do is set the angles with "angles" and set
the length in y units, but i can't figure out how to do that.
Thanks,
-Chris
--
Christopher Barker, Ph.D.
Oceanographer
Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception
chris.bar...@noaa.gov
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